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Questions about models for the valuation of option contracts.

1 vote

option pricing with limitation on the change of underlying daily changes

As Black Scholes model, you can assume a two-sided Truncated Normal Distribution as riskneutral density $f(x)$ (with $\mu=0,\sigma=T-t$) for the returns and then price the option payoff $H$ as usual b …
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1 vote

Is Trading in the Underlying Necessary for Replication?

The fact that you can solve the second set of equations means that you can hedge the option through another asset aswell, in a simple binomial world this may indeed be true. Note that your strategy mu …
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0 votes

Option on a dice game

The next throw is independent of the previous throws, so you only calculate the value of the future expected payoffs from the option to continue. How many "$n$"s does the dice have, and what is their …
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9 votes
Accepted

How can put options be more expensive than call options in an efficient market?

Its a stylized fact in academia that put options are overpriced. E.g., the monthly average return on S&P500 put options is around -40% for ATM options. The most often quoted reason for this phenomen …
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2 votes

Joint distribution from expectations

It is not possible to derive the joint distribution from the expectation under the given information here. The fact that you have the expectation for all $K$ says nothing about the joint distribution …
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3 votes

Arbitrage bounds for Black-Scholes

The No-Arbitrage bounds for a European put are: $$ (Ke^{-rT}-S)^+ \leq P \leq K e^{-rT}$$ This is because the maximum payoff at maturity is $K$ (discounted) and the minimum value is the discounted i …
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5 votes

Pricing American with floating strike

These options can be priced by adding an early exercise premium value to the intrinsic value: https://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.542.3141&rep=rep1&type=pdf
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12 votes
2 answers
7k views

Heston Model Option Price Formula

What is the formula for the vanilla option (Call/Put) price in the Heston model? I only found the bi-variate system of stochastic differential equations of Heston model but no expression for the opt …
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-1 votes

Pricing options under a specific framework

You can always estimate the expectation by simulating the distribution. In your case if it is a European option, you can just calculate the average simulated payoff. If it is an American option you ca …
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0 votes
0 answers
786 views

Examples of risk-seeking utility functions?

In the past, most literature assumed a risk-averse investor to model utility preferences. This includes the CRRA and CARA utility functions. In recent papers, researchers state that investors may be …
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3 votes
Accepted

Arbitrage opportunity between two call options with strike price \$40, \$30 and cost \$4, \$...

No you need to subtract the cost of entering your position as well as the financing costs thereof. In this case you actually receive net \$1 option premiums which yields additional interest at maturit …
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1 vote
1 answer
1k views

American Option Bounds with Dividend Yield

What are the upper and lower bound of American call and put options for an underlying with continuous dividend yield? For European options, the bounds are known as \begin{align*} [S_te^{-d\tau}-Ke^{ …
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1 vote

Pricing Principle 1

In general, if one can create a portfolio with the same payoff as the derivative, their prices must be equal. This is also called "Law of One Price". Here an excerpt from my script: Here EMM = Equiv …
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4 votes

Is it fair to assume $(ud=1)$ in the binomial tree option pricing model?

The condition $$ud=1\text{, or equivalently }u=1/d$$ is necessary to ensure convergence of the Binomial tree's mean $\mu$ and standard deviation $\sigma$ to nonfinite values when $n$ (number of step …
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1 vote

How would you price this kind of derivative?

You can use the "Merton Jump Diffusion Model" to price European Options with jumps. The other points of your question are rather of practical relevance only. The negative drift of the underlying is u …
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